Material Handling

Material handling covers moving parts, containers, or stock between stations without processing them. The definition is deliberately broad: the same category takes in a cobot shuffling totes between conveyors and a heavy arm swinging engine castings out of a stamping press.

Because the payload spread is so wide, sizing has to start from the actual load and travel path. A 5 kg tote transfer wants a small collaborative arm, a 300 kg coil handoff needs a floor-anchored heavy 6-axis with reach sized for the swing, and the wrong pick between those two is either underbuilt or overspent.

Grippers often change across a shift as part families move through the cell. Quick-change tool plates, dual-gripper wrists, and vacuum-plus-finger combinations show up here more than in most applications. Gripper mass counts against payload, and shops sometimes forget to subtract it before promising cycle time.

Integration is half the job. Material handling cells rarely stand alone, they tie into conveyors, AGVs, ASRS drops, or forklift lanes, so the safety plan has to cover shared travel paths and the PLC handshake with each moving neighbor.

Two pitfalls repeat across projects. Gripper repeatability drifts with wear on jaws and cups, showing up as random dropped parts or crooked placements. Singularity crossings appear in long straight moves near the reach limit, which either stops the cycle or forces a slower reorientation, and both are easy to miss until the cell is running production.

Compatibility limits are honest ones. Robots don't like unstable loads, wet or oil-covered parts that fool vacuum cups, or floors that flex under the base plate. Each of those is fixable, and each adds cost that a plain conveyor or a dedicated shuttle might spare.

Common picks by size: Universal Robots UR10e for light benchtop transfer, FANUC M-20iD/25 for mid-size handling around machines, and the ABB IRB 6700 for heavy castings, coils, and racks. Related: palletizing, machine tending, gantry loading.